MS. REENA MAHAJAN M.D.
NPI 1457519910
Internal Medicine in Atlanta, GA
About Ms. Reena Mahajan M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MS. REENA MAHAJAN M.D. (NPI 1457519910) is an individual internal medicine provider in Atlanta, Georgia, licensed in Georgia (069678) and active in the NPI registry since May 2008. She is enrolled in Medicare PECOS and is a graduate of George Washington University School Of Medicine (2008).
NPPES Registry Identity
Specialties & Licenses
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Ms. Reena Mahajan M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
3Medicare enrollment records show Reena Mahajan reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
San Diego, CA 92120
- Reassigned Medicare billing, California enrollment
- 13,921 clinicians in this Medicare group
Stockton, CA 95210
- Reassigned Medicare billing, California enrollment
- 20,078 clinicians in this Medicare group
Greenbrae, CA 94904
- Reassigned Medicare billing, California enrollment
- 82 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 30303 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
ATLANTA, GA 30303
ATLANTA, GA 30303
ATLANTA, GA 30303
ATLANTA, GA 30303
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Reena Mahajan's NPI number?
The NPI number for Reena Mahajan is 1457519910. It was assigned to this individual provider in the NPPES registry on May 30, 2008.
Where is Reena Mahajan located?
Reena Mahajan practices at 69 Jesse Hill Jr Dr SE, Atlanta, GA 30303. The listed phone number is (404) 616-7028.
What is Reena Mahajan's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Reena Mahajan enrolled in Medicare?
Yes. Reena Mahajan is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Reena Mahajan's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Reena Mahajan reassigns Medicare benefits to 3 organizations: Southern California Permanente Medical Group (San Diego, CA), Permanente Medical Group Inc (Stockton, CA) and Marin Hospitalist Medical Group, Inc. (Greenbrae, CA). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Reena Mahajan's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Reena Mahajan was last updated on March 27, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Ms. Reena Mahajan, M.D. · NPI 1457519910
Internal Medicine physician in Atlanta, Georgia. Individual provider, active in the CMS NPPES registry since May 30, 2008.
## Identity
- **NPI:** 1457519910 (Entity type: Individual)
- **Enumerated:** May 30, 2008
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** 069678 (Georgia)
- **Sole proprietor:** No
## Practice location
- **Address:** 69 JESSE HILL JR DR SE, Atlanta, GA 30303-3033
- **Phone:** (404) 616-7028 · **Fax:** (404) 525-2957
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 3 organizations under Medicare reassignment (form CMS-855R): Southern California Permanente Medical Group (NPI 1225060742, San Diego, CA); Permanente Medical Group Inc (NPI 1548343510, Stockton, CA); Marin Hospitalist Medical Group, Inc. (NPI 1023041753, Greenbrae, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** George Washington University School Of Medicine, class of 2008
## Record status
- **NPPES last updated:** March 27, 2023
---
Source: [NPI Profile](https://npiprofile.com/npi/1457519910) · Data from the CMS NPPES public registry.